... pagesdoi:10.1155/2007/58358Research Article A Principal Component Regression Approach for EstimatingVentricular Repolarization Duration VariabilityMika P. Tarvainen,1Tomi Laitinen,2Tiina Lyyra-Laitinen,2Juha-Pekka ... 1990.[8] A. Porta, G. Baselli, F. Lombardi, et al., Performance assess-ment of standard algorithms for dynamic R-T interval mea-surement: comparison between R-Tapexand R-Tend approach, ”Medical ... 1992.[7] P. Laguna, N. V. Thakor, P. Caminal, et al., “New algorithm for QT interval analysis in 24-hour Holter ECG: performance andapplications,” Medical and Biological Engineer ing and Comput-ing,...